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<div class="title">/home/nicola/public_html/elgg/mod/mtcd/views/default/widgets/recommender/recommender.php</div>  </div>
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<a href="recommender_8php.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 &lt;?php
<a name="l00002"></a>00002 
<a name="l00003"></a><a class="code" href="recommender_8php.html#a8fe8ebd3454eacd18632944186932c3f">00003</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#a8fe8ebd3454eacd18632944186932c3f">inizializza_file_arff</a>($path,$testo)
<a name="l00004"></a>00004 {
<a name="l00005"></a>00005         $var=fopen($path,<span class="stringliteral">&quot;w&quot;</span>);
<a name="l00006"></a>00006         fwrite($var, $testo);
<a name="l00007"></a>00007         fwrite($var, <span class="stringliteral">&quot;\r\n&quot;</span>);
<a name="l00008"></a>00008         fclose($var);
<a name="l00009"></a>00009 }
<a name="l00010"></a>00010 
<a name="l00011"></a><a class="code" href="recommender_8php.html#a870e4302c08ac293ea948fbdf60d2108">00011</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#a870e4302c08ac293ea948fbdf60d2108">scrivi_file_arff</a>($path,$testo)
<a name="l00012"></a>00012 {
<a name="l00013"></a>00013         $var=fopen($path,<span class="stringliteral">&quot;a+&quot;</span>);
<a name="l00014"></a>00014         fwrite($var, $testo);
<a name="l00015"></a>00015         fwrite($var, <span class="stringliteral">&quot;\r\n&quot;</span>);
<a name="l00016"></a>00016         fclose($var);
<a name="l00017"></a>00017 }
<a name="l00018"></a>00018 
<a name="l00019"></a><a class="code" href="recommender_8php.html#a71944f39060e57ebfaee8b270bd21c6c">00019</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#a71944f39060e57ebfaee8b270bd21c6c">scrivi_file_log</a>($path,$testo)
<a name="l00020"></a>00020 {
<a name="l00021"></a>00021         $var=fopen($path,<span class="stringliteral">&quot;a+&quot;</span>);
<a name="l00022"></a>00022         fwrite($var, $testo);
<a name="l00023"></a>00023         fwrite($var, <span class="stringliteral">&quot;\r\n&quot;</span>);
<a name="l00024"></a>00024         fclose($var);
<a name="l00025"></a>00025 }
<a name="l00026"></a>00026 
<a name="l00027"></a>00027 <span class="comment">/*</span>
<a name="l00028"></a>00028 <span class="comment">Funzione che crea un oggetto di tipo cluster e lo inserisce nel database di elgg. </span>
<a name="l00029"></a>00029 <span class="comment">*/</span>
<a name="l00030"></a><a class="code" href="recommender_8php.html#ac7becbf8a77dbd75c3207136146ecc34">00030</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#ac7becbf8a77dbd75c3207136146ecc34">insert_clusters</a>($clusters1,$clusters2,$object_type)
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032         $cluster = <span class="keyword">new</span> ElggObject();
<a name="l00033"></a>00033         $cluster-&gt;title = <span class="stringliteral">&#39;cluster1_&#39;</span> . $object_type;
<a name="l00034"></a>00034         $cluster-&gt;description = <span class="stringliteral">&quot;Oggetto che definisce il primo cluster per l&#39;entità &quot;</span> . $object_type; 
<a name="l00035"></a>00035         $cluster-&gt;subtype = <span class="stringliteral">&#39;cluster&#39;</span>;
<a name="l00036"></a>00036         $cluster-&gt;access_id = 2; <span class="comment">//per rendere l&#39;oggetto pubblico, altrimenti sarà visibile solo al proprio creatore</span>
<a name="l00037"></a>00037         $cluster-&gt;save();
<a name="l00038"></a>00038         
<a name="l00039"></a>00039         <span class="keywordflow">for</span>($i=0;$i&lt;count($clusters1);$i++)
<a name="l00040"></a>00040         {
<a name="l00041"></a>00041                 $cluster-&gt;addRelationship($clusters1[$i],<span class="stringliteral">&#39;cluster1_&#39;</span> . $object_type); 
<a name="l00042"></a>00042         }
<a name="l00043"></a>00043         
<a name="l00044"></a>00044         $cluster2 = <span class="keyword">new</span> ElggObject();
<a name="l00045"></a>00045         $cluster2-&gt;title = <span class="stringliteral">&#39;cluster2_&#39;</span> . $object_type;
<a name="l00046"></a>00046         $cluster2-&gt;description = <span class="stringliteral">&quot;Oggetto che definisce il secondo cluster per l&#39;entità &quot;</span> . $object_type;
<a name="l00047"></a>00047         $cluster2-&gt;subtype = <span class="stringliteral">&#39;cluster&#39;</span>;
<a name="l00048"></a>00048         $cluster2-&gt;access_id = 2; <span class="comment">//per rendere l&#39;oggetto pubblico, altrimenti sarà visibile solo al proprio creatore</span>
<a name="l00049"></a>00049         $cluster2-&gt;save();
<a name="l00050"></a>00050         
<a name="l00051"></a>00051         <span class="keywordflow">for</span>($i=0;$i&lt;count($clusters2);$i++)
<a name="l00052"></a>00052         {
<a name="l00053"></a>00053                 $cluster2-&gt;addRelationship($clusters2[$i],<span class="stringliteral">&#39;cluster2_&#39;</span> . $object_type); 
<a name="l00054"></a>00054         }
<a name="l00055"></a>00055                         
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057 
<a name="l00058"></a><a class="code" href="recommender_8php.html#a597018c67ad84aee4098c59cfdd83177">00058</a> <span class="keyword">function</span> <a class="code" href="start_8php.html#a0ca6c057aa7e778ab38cb43a3d303e88" title="Use simple k-means to obtain omogeneous clusters of entities.">get_clusters</a>(&amp;$cluster1,&amp;$cluster2,$path_file)
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060         <a class="code" href="settings_8php.html#ada8a7130088351710bb02ed622d6bf65">$plugin</a> = elgg_get_plugin_from_id(<span class="stringliteral">&#39;mtcd&#39;</span>);
<a name="l00061"></a>00061         <a class="code" href="settings_8php.html#ac7c3353107070daa85f641882931b358">$settings</a> = <a class="code" href="settings_8php.html#ada8a7130088351710bb02ed622d6bf65">$plugin</a>-&gt;getAllSettings();
<a name="l00062"></a>00062                         
<a name="l00063"></a>00063         exec(<span class="stringliteral">&quot;java -cp &quot;</span> . <a class="code" href="settings_8php.html#ac7c3353107070daa85f641882931b358">$settings</a>[<span class="stringliteral">&#39;path_weka&#39;</span>] . <span class="stringliteral">&quot; weka.clusterers.SimpleKMeans -t &quot;</span>. $path_file  .<span class="stringliteral">&quot; -c first -N 2 -A \&quot;weka.core.EuclideanDistance -R first-last\&quot; -I 500 -S 10&quot;</span>,$ris);
<a name="l00064"></a>00064         
<a name="l00065"></a>00065         $flag = <span class="keyword">false</span>; 
<a name="l00066"></a>00066         $cluster1 = array();
<a name="l00067"></a>00067         $c1 = 0; 
<a name="l00068"></a>00068         $cluster2 = array();
<a name="l00069"></a>00069         $c2 = 0; 
<a name="l00070"></a>00070         $pos_start = 0; 
<a name="l00071"></a>00071         $pos_del = 0; 
<a name="l00072"></a>00072         <span class="keywordflow">for</span>($i=0;$i&lt;count($ris);$i++)
<a name="l00073"></a>00073         {
<a name="l00074"></a>00074                 
<a name="l00075"></a>00075          
<a name="l00076"></a>00076                  <span class="keywordflow">if</span>(strpos($ris[$i],<span class="stringliteral">&quot;assigned to cluster&quot;</span>))
<a name="l00077"></a>00077                  {
<a name="l00078"></a>00078                         $pos_start = $i+1;
<a name="l00079"></a>00079                         $flag = <span class="keyword">true</span>; 
<a name="l00080"></a>00080                         <span class="keywordflow">for</span>($j=$pos_start; $j&lt; count($ris);$j++)
<a name="l00081"></a>00081                         {
<a name="l00082"></a>00082                                 <span class="keywordflow">if</span>($ris[$j] == <span class="stringliteral">&quot;&quot;</span> &amp;&amp; $flag)
<a name="l00083"></a>00083                                 {
<a name="l00084"></a>00084                                         $pos_del = $j;  
<a name="l00085"></a>00085                                         $flag = <span class="keyword">false</span>; 
<a name="l00086"></a>00086                                 }
<a name="l00087"></a>00087                         }
<a name="l00088"></a>00088                  }
<a name="l00089"></a>00089         }
<a name="l00090"></a>00090         
<a name="l00091"></a>00091         
<a name="l00092"></a>00092         
<a name="l00093"></a>00093         
<a name="l00094"></a>00094         <span class="keywordflow">for</span>($i=$pos_start;$i&lt;$pos_del;$i++)
<a name="l00095"></a>00095         {
<a name="l00096"></a>00096                 $value = explode(<span class="stringliteral">&quot;|&quot;</span>,$ris[$i]);
<a name="l00097"></a>00097                 
<a name="l00098"></a>00098                 <span class="keywordflow">if</span>(substr($ris[$i],1,1) == <span class="charliteral">&#39;1&#39;</span>)
<a name="l00099"></a>00099                 {
<a name="l00100"></a>00100                         $cluster1[$c1] =  $value[1];
<a name="l00101"></a>00101                         $c1 +=1;        
<a name="l00102"></a>00102                 }
<a name="l00103"></a>00103                 <span class="keywordflow">else</span>
<a name="l00104"></a>00104                 {
<a name="l00105"></a>00105                         $cluster2[$c2] = $value[1];
<a name="l00106"></a>00106                         $c2 +=1;
<a name="l00107"></a>00107                 }
<a name="l00108"></a>00108                 
<a name="l00109"></a>00109                 
<a name="l00110"></a>00110         }
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112 
<a name="l00113"></a><a class="code" href="recommender_8php.html#a6d50667c29ac7a040f568b9217127d2c">00113</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#a6d50667c29ac7a040f568b9217127d2c">get_parsing_sinonimi</a>($parola)
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115         <a class="code" href="settings_8php.html#ada8a7130088351710bb02ed622d6bf65">$plugin</a> = elgg_get_plugin_from_id(<span class="stringliteral">&#39;mtcd&#39;</span>);
<a name="l00116"></a>00116         $path_wn = <a class="code" href="settings_8php.html#ada8a7130088351710bb02ed622d6bf65">$plugin</a>-&gt;getAllSettings();
<a name="l00117"></a>00117          
<a name="l00118"></a>00118         <span class="comment">//echo &quot;&lt;p&gt;Wn : &quot; . $path_wn[&#39;path_wn&#39;] . &quot; &quot;. $parola .&quot; -synsn&lt;/p&gt;&quot;;</span>
<a name="l00119"></a>00119         exec($path_wn[<span class="stringliteral">&#39;path_wn&#39;</span>] . <span class="stringliteral">&quot; &quot;</span>. $parola .<span class="stringliteral">&quot; -synsn&quot;</span>,$ris);
<a name="l00120"></a>00120 
<a name="l00121"></a>00121         <span class="comment">//recupero i sinonimi</span>
<a name="l00122"></a>00122         <span class="comment">//comincio il paearsing dei sinonimi</span>
<a name="l00123"></a>00123 
<a name="l00124"></a>00124         
<a name="l00125"></a>00125 
<a name="l00126"></a>00126         <span class="comment">//Conterrà tutti i sinonimi</span>
<a name="l00127"></a>00127         $blog_sin = array();
<a name="l00128"></a>00128         $j = 0;
<a name="l00129"></a>00129         <span class="keywordflow">for</span>($i=0;$i&lt;count($ris);$i++)
<a name="l00130"></a>00130         {
<a name="l00131"></a>00131                 <span class="keywordflow">if</span>(substr($ris[$i],0) == <span class="stringliteral">&#39;Sense &#39;</span> . $j)
<a name="l00132"></a>00132                 {
<a name="l00133"></a>00133                         $i +=1;
<a name="l00134"></a>00134                 }
<a name="l00135"></a>00135                         
<a name="l00136"></a>00136                 <span class="keywordflow">if</span>(substr(ltrim($ris[$i]),0,3) == <span class="stringliteral">&quot;=&gt; &quot;</span>)
<a name="l00137"></a>00137                 {
<a name="l00138"></a>00138                         $sinonimi = explode(<span class="stringliteral">&quot;, &quot;</span>,substr(ltrim($ris[$i]),3));
<a name="l00139"></a>00139 
<a name="l00140"></a>00140                         <span class="keywordflow">foreach</span>($sinonimi as $value)
<a name="l00141"></a>00141                         {
<a name="l00142"></a>00142                                 <span class="keywordflow">if</span>($value != <span class="stringliteral">&quot;&quot;</span>)
<a name="l00143"></a>00143                                 {
<a name="l00144"></a>00144                                         $blog_sin[$j] = $value;
<a name="l00145"></a>00145                                         $j++;
<a name="l00146"></a>00146                                         <span class="comment">//echo &quot;&lt;p&gt;&quot;. $value  .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00147"></a>00147                                 }
<a name="l00148"></a>00148                         }
<a name="l00149"></a>00149                 }
<a name="l00150"></a>00150                         
<a name="l00151"></a>00151                 <span class="keywordflow">if</span>(substr(ltrim($ris[$i]),0,13) == <span class="stringliteral">&quot;INSTANCE OF=&gt;&quot;</span>)
<a name="l00152"></a>00152                 {
<a name="l00153"></a>00153                         <span class="comment">//$sinonimi = explode(&quot;,&quot;,substr(ltrim($ris[$i]),13));</span>
<a name="l00154"></a>00154 
<a name="l00155"></a>00155                         <span class="comment">//foreach($sinonimi as $value)</span>
<a name="l00156"></a>00156                         <span class="comment">//{</span>
<a name="l00157"></a>00157                         <span class="comment">//echo &quot;&lt;p&gt;&quot;. $value  .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00158"></a>00158                         <span class="comment">//}</span>
<a name="l00159"></a>00159                 }
<a name="l00160"></a>00160         }
<a name="l00161"></a>00161         <span class="keywordflow">return</span> $blog_sin;
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163 
<a name="l00164"></a><a class="code" href="recommender_8php.html#a9acc587254949b607da15bda54d8e2c4">00164</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#a9acc587254949b607da15bda54d8e2c4">get_filtered_entities</a>(&amp;$tabella_tag,&amp;$riga_tag)
<a name="l00165"></a>00165 {
<a name="l00166"></a>00166         <span class="comment">/*</span>
<a name="l00167"></a>00167 <span class="comment">         Inizio il filtraggio dei tag dei blog tramite wordnet.</span>
<a name="l00168"></a>00168 <span class="comment">        Per iniziare considero ogni tag singolarmente..</span>
<a name="l00169"></a>00169 <span class="comment">        */</span>
<a name="l00170"></a>00170         <span class="keywordflow">for</span>($i=0;$i&lt; count($riga_tag);$i++)
<a name="l00171"></a>00171         {
<a name="l00172"></a>00172                 <span class="comment">//scrivi_file_log(dirname(__FILE__) .&#39;/Log.txt&#39;,&quot;Considero il tag &quot; . $riga_tag_blog[$i]);</span>
<a name="l00173"></a>00173 
<a name="l00174"></a>00174                 $sin = <a class="code" href="recommender_8php.html#a6d50667c29ac7a040f568b9217127d2c">get_parsing_sinonimi</a>($riga_tag[$i]);
<a name="l00175"></a>00175 
<a name="l00176"></a>00176                 <span class="comment">//scrivi_file_log(dirname(__FILE__) .&#39;/Log.txt&#39;,&quot;Sinonimi trovati per &quot;. $riga_tag_blog[$i]);</span>
<a name="l00177"></a>00177 
<a name="l00178"></a>00178                 <span class="comment">//foreach($blog_sin as $value)</span>
<a name="l00179"></a>00179                 <span class="comment">//{</span>
<a name="l00180"></a>00180                 <span class="comment">//scrivi_file_log(dirname(__FILE__) .&#39;/Log.txt&#39;,$value);</span>
<a name="l00181"></a>00181                 <span class="comment">//}</span>
<a name="l00182"></a>00182 
<a name="l00183"></a>00183                 <span class="comment">//Ora sin conterrà tutti i sinonimi relativi ad un solo tag in elgg. Il prossimo passo è</span>
<a name="l00184"></a>00184                 <span class="comment">//confrontare ogni sinonimo con tutti gli altri tag e se rilevo una situazione di ugualiaza devo agire come segue:</span>
<a name="l00185"></a>00185                 <span class="comment">//      1 - Spostare tutti i riferimenti del secondo tag al primo tag</span>
<a name="l00186"></a>00186                 <span class="comment">//      2 - Eliminare il secondo tag.</span>
<a name="l00187"></a>00187                 <span class="comment">//</span>
<a name="l00188"></a>00188                 <span class="comment">//Per ogni tag ritrovato..</span>
<a name="l00189"></a>00189                 <span class="comment">//Per ogni sinonimo ritrovato..</span>
<a name="l00190"></a>00190                 <span class="keywordflow">for</span>($j=0;$j&lt;count($sin);$j++)
<a name="l00191"></a>00191                 {
<a name="l00192"></a>00192                         <span class="comment">//considero tutti i tag relativi ai blog.</span>
<a name="l00193"></a>00193                         <span class="keywordflow">for</span>($k=0;$k&lt;count($riga_tag);$k++)
<a name="l00194"></a>00194                         {
<a name="l00195"></a>00195                                 <span class="comment">//..evito di confrontare il tag con se stesso</span>
<a name="l00196"></a>00196                                 <span class="keywordflow">if</span>($riga_tag[$k] !=  $riga_tag[$i])
<a name="l00197"></a>00197                                 {
<a name="l00198"></a>00198                                         <span class="comment">//scrivi_file_log(dirname(__FILE__) .&#39;/Log.txt&#39;,&quot;Confronto il sinonimo &quot;. $blog_sin[$j] .&quot; con &quot;. $riga_tag_blog[$k]);</span>
<a name="l00199"></a>00199                                         <span class="comment">//..se trovo un sinonimo equivalente devo effettuare lo scambio</span>
<a name="l00200"></a>00200                                         <span class="keywordflow">if</span>($sin[$j] == $riga_tag[$k])
<a name="l00201"></a>00201                                         {
<a name="l00202"></a>00202                                                 <span class="comment">//scrivi_file_log(dirname(__FILE__) .&#39;/Log.txt&#39;,&quot;Corrispondenza positiva&quot;);</span>
<a name="l00203"></a>00203                                                 <span class="comment">//Posizione del tag da eliminare</span>
<a name="l00204"></a>00204                                                 $pos_del = $j+1;
<a name="l00205"></a>00205                                                 <span class="comment">//Posizione dove spostare i valori relativi ai tag</span>
<a name="l00206"></a>00206                                                 $pos_new = $k+1;
<a name="l00207"></a>00207 
<a name="l00208"></a>00208                                                 <span class="comment">//scrivi_file_log(dirname(__FILE__) .&#39;/Log.txt&#39;,&quot;Pos vecchia &quot;.$pos_del.&quot;, pos nuova &quot;.$pos_new);</span>
<a name="l00209"></a>00209                                                         
<a name="l00210"></a>00210                                                 <span class="comment">//considero tutte le righe della tabella item/tag</span>
<a name="l00211"></a>00211                                                 <span class="keywordflow">for</span>($a=0;$a&lt;count($tabella_tag);$a++)
<a name="l00212"></a>00212                                                 {
<a name="l00213"></a>00213                                                         <span class="comment">//scrivi_file_log(dirname(__FILE__) .&#39;/Log.txt&#39;,&quot;Analizzo il blog n. &quot;.$a);</span>
<a name="l00214"></a>00214                                                                 
<a name="l00215"></a>00215                                                         $tag = &amp;$tabella_tag[$a];
<a name="l00216"></a>00216                                                         <span class="comment">//se trovo true nella posizione da eliminare</span>
<a name="l00217"></a>00217                                                         <span class="keywordflow">if</span>($tag[$pos_del] == <span class="stringliteral">&#39;true&#39;</span>)
<a name="l00218"></a>00218                                                         {
<a name="l00219"></a>00219                                                                 <span class="comment">//scrivi_file_log(dirname(__FILE__) .&#39;/Log.txt&#39;,&quot;Rilevato true in pos. &quot;.$pos_del);</span>
<a name="l00220"></a>00220 
<a name="l00221"></a>00221                                                                 <span class="comment">//setto a true la rispettiva posizione</span>
<a name="l00222"></a>00222                                                                 $tag[$pos_new] = <span class="stringliteral">&#39;true&#39;</span>;
<a name="l00223"></a>00223                                                         }
<a name="l00224"></a>00224                                                         <span class="comment">//cancello il relativo valore true/false</span>
<a name="l00225"></a>00225                                                         unset($tag[$pos_del]);
<a name="l00226"></a>00226                                                         $tag = array_values($tag);
<a name="l00227"></a>00227                                                 }
<a name="l00228"></a>00228                                                 <span class="comment">//cancello il tag considerato</span>
<a name="l00229"></a>00229                                                 unset($riga_tag[$k]);
<a name="l00230"></a>00230                                                 $riga_tag = array_values($riga_tag);
<a name="l00231"></a>00231                                         }
<a name="l00232"></a>00232                                 }
<a name="l00233"></a>00233                         }<span class="comment">//fine for k</span>
<a name="l00234"></a>00234                 }<span class="comment">//fine for j</span>
<a name="l00235"></a>00235         }<span class="comment">//fine for con i</span>
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237 
<a name="l00238"></a>00238 
<a name="l00239"></a><a class="code" href="recommender_8php.html#a396b87842cb9ef6f3a81672372630f66">00239</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#a396b87842cb9ef6f3a81672372630f66">create_arff_file</a>($tabella_tag,$riga_tag,$path_file)
<a name="l00240"></a>00240 {
<a name="l00241"></a>00241         <span class="comment">//Creo una stringa con tutti i GUID</span>
<a name="l00242"></a>00242         <span class="keywordflow">for</span>($i=0;$i&lt;count($tabella_tag);$i++)
<a name="l00243"></a>00243         {
<a name="l00244"></a>00244                 <span class="comment">//blog -&gt; entitie</span>
<a name="l00245"></a>00245                 $entities = $tabella_tag[$i];
<a name="l00246"></a>00246 
<a name="l00247"></a>00247                 <span class="keywordflow">if</span>($i == 0)
<a name="l00248"></a>00248                 {
<a name="l00249"></a>00249                         $entities_Guid = $entities[0];
<a name="l00250"></a>00250                 }
<a name="l00251"></a>00251                 <span class="keywordflow">else</span>
<a name="l00252"></a>00252                 {
<a name="l00253"></a>00253                         $entities_Guid .= <span class="charliteral">&#39;,&#39;</span> . $entities[0];
<a name="l00254"></a>00254                 }
<a name="l00255"></a>00255         }
<a name="l00256"></a>00256 
<a name="l00257"></a>00257         <a class="code" href="recommender_8php.html#a8fe8ebd3454eacd18632944186932c3f">inizializza_file_arff</a>($path_file,<span class="stringliteral">&#39;%begin file&#39;</span>);
<a name="l00258"></a>00258         <a class="code" href="recommender_8php.html#a870e4302c08ac293ea948fbdf60d2108">scrivi_file_arff</a>($path_file,<span class="stringliteral">&#39;@relation entities&#39;</span>);
<a name="l00259"></a>00259         <a class="code" href="recommender_8php.html#a870e4302c08ac293ea948fbdf60d2108">scrivi_file_arff</a>($path_file,<span class="stringliteral">&#39;@attribute ID {&#39;</span> . $entities_Guid . <span class="charliteral">&#39;}&#39;</span>);
<a name="l00260"></a>00260 
<a name="l00261"></a>00261         <span class="comment">//Definisco gli attributi</span>
<a name="l00262"></a>00262         <span class="keywordflow">for</span>($i=0;$i&lt; count($riga_tag);$i++)
<a name="l00263"></a>00263         {
<a name="l00264"></a>00264                 <a class="code" href="recommender_8php.html#a870e4302c08ac293ea948fbdf60d2108">scrivi_file_arff</a>($path_file,<span class="stringliteral">&#39;@attribute &#39;</span> . $riga_tag[$i]  . <span class="stringliteral">&#39;{true,false}&#39;</span>);
<a name="l00265"></a>00265         }
<a name="l00266"></a>00266 
<a name="l00267"></a>00267         <a class="code" href="recommender_8php.html#a870e4302c08ac293ea948fbdf60d2108">scrivi_file_arff</a>($path_file,<span class="stringliteral">&#39;@data&#39;</span>);
<a name="l00268"></a>00268 
<a name="l00269"></a>00269         <span class="comment">//definisco la tabella grazie agli array $tabella_</span>
<a name="l00270"></a>00270         <span class="keywordflow">for</span>($i=0;$i&lt;count($tabella_tag);$i++)
<a name="l00271"></a>00271         {
<a name="l00272"></a>00272                 $entities = $tabella_tag[$i];
<a name="l00273"></a>00273 
<a name="l00274"></a>00274                 <span class="keywordflow">for</span>($j=0;$j&lt;count($entities);$j++)
<a name="l00275"></a>00275                 {
<a name="l00276"></a>00276                         <span class="keywordflow">if</span>($j ==0)
<a name="l00277"></a>00277                         {
<a name="l00278"></a>00278                                 $entity_row = $entities[$j];
<a name="l00279"></a>00279                         }
<a name="l00280"></a>00280                         <span class="keywordflow">else</span>
<a name="l00281"></a>00281                         {
<a name="l00282"></a>00282                                 $entity_row .= <span class="charliteral">&#39;,&#39;</span> . $entities[$j];
<a name="l00283"></a>00283                         }
<a name="l00284"></a>00284                 }
<a name="l00285"></a>00285                 <a class="code" href="recommender_8php.html#a870e4302c08ac293ea948fbdf60d2108">scrivi_file_arff</a>($path_file,$entity_row);
<a name="l00286"></a>00286                 $entity_row = <span class="stringliteral">&#39;&#39;</span>;
<a name="l00287"></a>00287         }
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289 
<a name="l00290"></a><a class="code" href="recommender_8php.html#ad8e588498271778944b50666d3397c25">00290</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#ad8e588498271778944b50666d3397c25">get_pages_for_clustering</a>(&amp;$riga_tag_page)
<a name="l00291"></a>00291 {
<a name="l00292"></a>00292         $pages = elgg_get_entities(array(<span class="stringliteral">&#39;type&#39;</span>=&gt;<span class="stringliteral">&#39;object&#39;</span>,<span class="stringliteral">&#39;subtype&#39;</span>=&gt;<span class="stringliteral">&#39;page&#39;</span>,<span class="stringliteral">&#39;limit&#39;</span>=&gt;0));
<a name="l00293"></a>00293         $top_pages = elgg_get_entities(array(<span class="stringliteral">&#39;type&#39;</span>=&gt;<span class="stringliteral">&#39;object&#39;</span>,<span class="stringliteral">&#39;subtype&#39;</span>=&gt;<span class="stringliteral">&#39;page_top&#39;</span>,<span class="stringliteral">&#39;limit&#39;</span>=&gt;0));
<a name="l00294"></a>00294 
<a name="l00295"></a>00295         <span class="comment">//Inizializzo l&#39;array che conterrà tutti i tag riferiti agli oggetti di tipo page</span>
<a name="l00296"></a>00296         $i = 0;
<a name="l00297"></a>00297          
<a name="l00298"></a>00298         <span class="keywordflow">foreach</span>($pages as $value)
<a name="l00299"></a>00299         {
<a name="l00300"></a>00300                 $metadati = elgg_get_metadata(array(
<a name="l00301"></a>00301                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00302"></a>00302                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00303"></a>00303                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00304"></a>00304                 ));
<a name="l00305"></a>00305 
<a name="l00306"></a>00306 
<a name="l00307"></a>00307                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00308"></a>00308                 {
<a name="l00309"></a>00309                         $riga_tag_page[$i] = $meta-&gt;value;
<a name="l00310"></a>00310                         $i +=1;
<a name="l00311"></a>00311                 }
<a name="l00312"></a>00312         }
<a name="l00313"></a>00313 
<a name="l00314"></a>00314         <span class="comment">//      echo &quot;&lt;p&gt;Tag considerati in page &quot;. count($riga_tag) .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00315"></a>00315 
<a name="l00316"></a>00316         <span class="comment">//Inserisco anche i tag degli oggetti di tipo top_page</span>
<a name="l00317"></a>00317          
<a name="l00318"></a>00318         <span class="keywordflow">foreach</span>($top_pages as $value)
<a name="l00319"></a>00319         {
<a name="l00320"></a>00320                 $metadati = elgg_get_metadata(array(
<a name="l00321"></a>00321                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00322"></a>00322                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00323"></a>00323                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00324"></a>00324                 ));
<a name="l00325"></a>00325 
<a name="l00326"></a>00326                 <span class="comment">//echo &quot;&lt;p&gt;Tag definiti in Top_page &quot;. count($metadati) .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00327"></a>00327 
<a name="l00328"></a>00328                 <span class="comment">//Inserisco un tag solo se non è stato già considerato nella categoria page</span>
<a name="l00329"></a>00329                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00330"></a>00330                 {
<a name="l00331"></a>00331                         $flag = <span class="keyword">false</span>;
<a name="l00332"></a>00332                                 
<a name="l00333"></a>00333                         <span class="keywordflow">foreach</span>($riga_tag_page as $tag_ins)
<a name="l00334"></a>00334                         {
<a name="l00335"></a>00335                                 <span class="comment">//echo &quot;&lt;p&gt;Confronto &quot;. $tag_ins . &quot; con &quot; . $meta-&gt;value . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00336"></a>00336                                 <span class="keywordflow">if</span>($meta-&gt;value == $tag_ins)
<a name="l00337"></a>00337                                 {
<a name="l00338"></a>00338                                         $flag = <span class="keyword">true</span>;
<a name="l00339"></a>00339                                 }
<a name="l00340"></a>00340                         }
<a name="l00341"></a>00341                                 
<a name="l00342"></a>00342                         <span class="keywordflow">if</span>(!$flag)
<a name="l00343"></a>00343                         {
<a name="l00344"></a>00344                                 $riga_tag_page[$i] = $meta-&gt;value;
<a name="l00345"></a>00345                         }
<a name="l00346"></a>00346                         $i +=1;
<a name="l00347"></a>00347                 }
<a name="l00348"></a>00348         }
<a name="l00349"></a>00349 
<a name="l00350"></a>00350         <span class="comment">//echo &quot;&lt;p&gt;Tag definitivi &quot;. count($riga_tag) .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00351"></a>00351 
<a name="l00352"></a>00352         <span class="comment">//Una  volta ottenuti tutti i nomi posso creare la tabella che conterrà le relazioni page-tag</span>
<a name="l00353"></a>00353         <span class="comment">//tramite un array associativo.</span>
<a name="l00354"></a>00354         $tabella_pages_tag = array();
<a name="l00355"></a>00355         $j = 0;
<a name="l00356"></a>00356 
<a name="l00357"></a>00357         <span class="keywordflow">foreach</span>($pages as $value)
<a name="l00358"></a>00358         {
<a name="l00359"></a>00359                 <span class="comment">//Array che conterrà i valori true/false riferiti ai metadati della pagina</span>
<a name="l00360"></a>00360                 <span class="comment">//identificata dal GUID</span>
<a name="l00361"></a>00361                 $metapage = array();
<a name="l00362"></a>00362                 <span class="comment">//setto l&#39;array completamente a false</span>
<a name="l00363"></a>00363                 $i = 0;
<a name="l00364"></a>00364                         
<a name="l00365"></a>00365                 <span class="keywordflow">foreach</span>($riga_tag_page as $meta_value)
<a name="l00366"></a>00366                 {
<a name="l00367"></a>00367                         $metapage[$i] = <span class="stringliteral">&#39;false&#39;</span>;
<a name="l00368"></a>00368                         $i +=1;
<a name="l00369"></a>00369                 }
<a name="l00370"></a>00370 
<a name="l00371"></a>00371                 $i = 0;
<a name="l00372"></a>00372                 <span class="comment">//Recupero i metadati</span>
<a name="l00373"></a>00373                 $metadati = elgg_get_metadata(array(
<a name="l00374"></a>00374                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00375"></a>00375                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00376"></a>00376                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00377"></a>00377                 ));
<a name="l00378"></a>00378                         
<a name="l00379"></a>00379                 <span class="comment">//Ogni tag che ho considerato lo confronto con un metadato riferito</span>
<a name="l00380"></a>00380                 <span class="comment">//all&#39;entità identificata dal GUID.</span>
<a name="l00381"></a>00381                 <span class="comment">//Se trovo corrispondenza positiva setto la posizione a TRUE.</span>
<a name="l00382"></a>00382                 <span class="comment">//Il conto delle posizione è affidato alla variabile i.</span>
<a name="l00383"></a>00383                 <span class="comment">//echo &quot;&lt;p&gt;ID &quot;. $value-&gt;getGUID() .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00384"></a>00384                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metadati &quot; . count($metadati) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00385"></a>00385                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metapage &quot; . count($metapage) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00386"></a>00386                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00387"></a>00387                 {
<a name="l00388"></a>00388                         <span class="comment">//echo &quot;&lt;p&gt;Metadato considerato &quot;. $meta-&gt;value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00389"></a>00389                         $i = 0;
<a name="l00390"></a>00390                                 
<a name="l00391"></a>00391                         <span class="keywordflow">foreach</span>($riga_tag_page as $riga_value)
<a name="l00392"></a>00392                         {
<a name="l00393"></a>00393                                 <span class="comment">//echo &quot;&lt;p&gt;Confronto &quot;. $meta-&gt;value .&quot; con &quot;. $riga_value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00394"></a>00394                                 <span class="keywordflow">if</span>($meta-&gt;value == $riga_value)
<a name="l00395"></a>00395                                 {
<a name="l00396"></a>00396                                         $metapage[$i] = <span class="stringliteral">&#39;true&#39;</span>;
<a name="l00397"></a>00397                                 }
<a name="l00398"></a>00398                                 $i +=1;
<a name="l00399"></a>00399                         }
<a name="l00400"></a>00400                 }
<a name="l00401"></a>00401                         
<a name="l00402"></a>00402                 <span class="comment">//Ora metapage è un array di true/false. Lo salvo nella tabella generale affiancato al GUID dell&#39;oggetto.</span>
<a name="l00403"></a>00403                 <span class="comment">//Per fare questo creo l&#39;ultima array del ciclo in cui in prima posizione metto il GUID</span>
<a name="l00404"></a>00404                 $final_array = array();
<a name="l00405"></a>00405                 $final_array[0] = $value-&gt;getGUID();
<a name="l00406"></a>00406                         
<a name="l00407"></a>00407                 <span class="keywordflow">for</span>($h=0;$h&lt;count($metapage);$h++)
<a name="l00408"></a>00408                 {
<a name="l00409"></a>00409                         $final_array[$h+1] = $metapage[$h];
<a name="l00410"></a>00410                 }
<a name="l00411"></a>00411                         
<a name="l00412"></a>00412                 $tabella_pages_tag[$j] = $final_array;
<a name="l00413"></a>00413                 $j +=1;
<a name="l00414"></a>00414         }
<a name="l00415"></a>00415 
<a name="l00416"></a>00416         <span class="keywordflow">foreach</span>($top_pages as $value)
<a name="l00417"></a>00417         {
<a name="l00418"></a>00418                 <span class="comment">//Array che conterrà i valori true/false riferiti ai metadati della pagina</span>
<a name="l00419"></a>00419                 <span class="comment">//identificata dal GUID</span>
<a name="l00420"></a>00420                 $metapage = array();
<a name="l00421"></a>00421                 <span class="comment">//setto l&#39;array completamente a false</span>
<a name="l00422"></a>00422                 $i = 0;
<a name="l00423"></a>00423 
<a name="l00424"></a>00424                 <span class="keywordflow">foreach</span>($riga_tag_page as $meta_value)
<a name="l00425"></a>00425                 {
<a name="l00426"></a>00426                         $metapage[$i] = <span class="stringliteral">&#39;false&#39;</span>;
<a name="l00427"></a>00427                         $i +=1;
<a name="l00428"></a>00428                 }
<a name="l00429"></a>00429 
<a name="l00430"></a>00430                 $i = 0;
<a name="l00431"></a>00431                 <span class="comment">//Recupero i metadati</span>
<a name="l00432"></a>00432                 $metadati = elgg_get_metadata(array(
<a name="l00433"></a>00433                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00434"></a>00434                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00435"></a>00435                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00436"></a>00436                 ));
<a name="l00437"></a>00437                         
<a name="l00438"></a>00438                 <span class="comment">//Ogni tag che ho considerato lo confronto con un metadato riferito</span>
<a name="l00439"></a>00439                 <span class="comment">//all&#39;entità identificata dal GUID.</span>
<a name="l00440"></a>00440                 <span class="comment">//Se trovo corrispondenza positiva setto la posizione a TRUE.</span>
<a name="l00441"></a>00441                 <span class="comment">//Il conto delle posizione è affidato alla variabile i.</span>
<a name="l00442"></a>00442                 <span class="comment">//echo &quot;&lt;p&gt;ID &quot;. $value-&gt;getGUID() .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00443"></a>00443                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metadati &quot; . count($metadati) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00444"></a>00444                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metapage &quot; . count($metapage) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00445"></a>00445                         
<a name="l00446"></a>00446                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00447"></a>00447                 {
<a name="l00448"></a>00448                         <span class="comment">//echo &quot;&lt;p&gt;Metadato considerato &quot;. $meta-&gt;value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00449"></a>00449                         $i = 0;
<a name="l00450"></a>00450 
<a name="l00451"></a>00451                         <span class="keywordflow">foreach</span>($riga_tag_page as $riga_value)
<a name="l00452"></a>00452                         {
<a name="l00453"></a>00453                                 <span class="comment">//echo &quot;&lt;p&gt;Confronto &quot;. $meta-&gt;value .&quot; con &quot;. $riga_value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00454"></a>00454                                 <span class="keywordflow">if</span>($meta-&gt;value == $riga_value)
<a name="l00455"></a>00455                                 {
<a name="l00456"></a>00456                                         $metapage[$i] = <span class="stringliteral">&#39;true&#39;</span>;
<a name="l00457"></a>00457                                 }
<a name="l00458"></a>00458                                 $i +=1;
<a name="l00459"></a>00459                         }
<a name="l00460"></a>00460                 }
<a name="l00461"></a>00461                         
<a name="l00462"></a>00462                 <span class="comment">//Ora metapage è un array di true/false. Lo salvo nella tabella generale affiancato al GUID dell&#39;oggetto.</span>
<a name="l00463"></a>00463                 <span class="comment">//Per fare questo creo l&#39;ultima array del ciclo in cui in prima posizione metto il GUID</span>
<a name="l00464"></a>00464                 $final_array = array();
<a name="l00465"></a>00465                 $final_array[0] = $value-&gt;getGUID();
<a name="l00466"></a>00466                         
<a name="l00467"></a>00467                 <span class="keywordflow">for</span>($h=0;$h&lt;count($metapage);$h++)
<a name="l00468"></a>00468                 {
<a name="l00469"></a>00469                         $final_array[$h+1] = $metapage[$h];
<a name="l00470"></a>00470                 }
<a name="l00471"></a>00471                         
<a name="l00472"></a>00472                 $tabella_pages_tag[$j] = $final_array;
<a name="l00473"></a>00473                 $j +=1;
<a name="l00474"></a>00474         }
<a name="l00475"></a>00475         <span class="keywordflow">return</span> $tabella_pages_tag;
<a name="l00476"></a>00476 }
<a name="l00477"></a>00477 
<a name="l00478"></a><a class="code" href="recommender_8php.html#af017742a97055349862e027a4faf3fb3">00478</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#af017742a97055349862e027a4faf3fb3">get_bookmark_for_clustering</a>(&amp;$riga_tag_book)
<a name="l00479"></a>00479 {
<a name="l00480"></a>00480         $books = elgg_get_entities(array(<span class="stringliteral">&#39;type&#39;</span>=&gt;<span class="stringliteral">&#39;object&#39;</span>,<span class="stringliteral">&#39;subtype&#39;</span>=&gt;<span class="stringliteral">&#39;bookmarks&#39;</span>,<span class="stringliteral">&#39;limit&#39;</span>=&gt;0));
<a name="l00481"></a>00481         <span class="comment">//Inizializzo l&#39;array che conterrà tutti i tag riferiti ai segnalibri</span>
<a name="l00482"></a>00482         $i = 0;
<a name="l00483"></a>00483          
<a name="l00484"></a>00484         <span class="keywordflow">foreach</span>($books as $value)
<a name="l00485"></a>00485         {
<a name="l00486"></a>00486                 $metadati = elgg_get_metadata(array(
<a name="l00487"></a>00487                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00488"></a>00488                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00489"></a>00489                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00490"></a>00490                 ));
<a name="l00491"></a>00491 
<a name="l00492"></a>00492                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00493"></a>00493                 {
<a name="l00494"></a>00494                         $riga_tag_book[$i] = $meta-&gt;value;
<a name="l00495"></a>00495                         $i +=1;
<a name="l00496"></a>00496                 }
<a name="l00497"></a>00497         }
<a name="l00498"></a>00498 
<a name="l00499"></a>00499         <span class="comment">//Una  volta ottenuti tutti i nomi posso creare la tabella che conterrà le relazioni segnalibro-tag</span>
<a name="l00500"></a>00500         <span class="comment">//tramite un array associativo.</span>
<a name="l00501"></a>00501         $tabella_books_tag = array();
<a name="l00502"></a>00502         $j = 0;
<a name="l00503"></a>00503 
<a name="l00504"></a>00504         <span class="keywordflow">foreach</span>($books as $value)
<a name="l00505"></a>00505         {
<a name="l00506"></a>00506                 <span class="comment">//Array che conterrà i valori true/false riferiti ai metadati dei segnalibri</span>
<a name="l00507"></a>00507                 <span class="comment">//identificato dal GUID</span>
<a name="l00508"></a>00508                 $metabook = array();
<a name="l00509"></a>00509                 <span class="comment">//setto l&#39;array completamente a false</span>
<a name="l00510"></a>00510                 $i = 0;
<a name="l00511"></a>00511                 <span class="keywordflow">foreach</span>($riga_tag_book as $meta_value)
<a name="l00512"></a>00512                 {
<a name="l00513"></a>00513                         $metabook[$i] = <span class="stringliteral">&#39;false&#39;</span>;
<a name="l00514"></a>00514                         $i +=1;
<a name="l00515"></a>00515                 }
<a name="l00516"></a>00516 
<a name="l00517"></a>00517                 $i = 0;
<a name="l00518"></a>00518                 <span class="comment">//Recupero i metadati</span>
<a name="l00519"></a>00519                 $metadati = elgg_get_metadata(array(
<a name="l00520"></a>00520                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00521"></a>00521                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00522"></a>00522                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00523"></a>00523                 ));
<a name="l00524"></a>00524                         
<a name="l00525"></a>00525                 <span class="comment">//Ogni tag che ho considerato lo confronto con un metadato riferito</span>
<a name="l00526"></a>00526                 <span class="comment">//all&#39;entità identificata dal GUID.</span>
<a name="l00527"></a>00527                 <span class="comment">//Se trovo corrispondenza positiva setto la posizione a TRUE.</span>
<a name="l00528"></a>00528                 <span class="comment">//Il conto delle posizione è affidato alla variabile i.</span>
<a name="l00529"></a>00529                 <span class="comment">//echo &quot;&lt;p&gt;ID &quot;. $value-&gt;getGUID() .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00530"></a>00530                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metadati &quot; . count($metadati) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00531"></a>00531                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metagroup &quot; . count($metabook) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00532"></a>00532                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00533"></a>00533                 {
<a name="l00534"></a>00534                         <span class="comment">//echo &quot;&lt;p&gt;Metadato considerato &quot;. $meta-&gt;value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00535"></a>00535                         $i = 0;
<a name="l00536"></a>00536                         <span class="keywordflow">foreach</span>($riga_tag_book as $riga_value)
<a name="l00537"></a>00537                         {
<a name="l00538"></a>00538                                 <span class="comment">//echo &quot;&lt;p&gt;Confronto &quot;. $meta-&gt;value .&quot; con &quot;. $riga_value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00539"></a>00539                                 <span class="keywordflow">if</span>($meta-&gt;value == $riga_value)
<a name="l00540"></a>00540                                 {
<a name="l00541"></a>00541                                         $metabook[$i] = <span class="stringliteral">&#39;true&#39;</span>;
<a name="l00542"></a>00542                                 }
<a name="l00543"></a>00543                                 $i +=1;
<a name="l00544"></a>00544                         }
<a name="l00545"></a>00545                 }
<a name="l00546"></a>00546                         
<a name="l00547"></a>00547                 <span class="comment">//Ora meta_book è un array di true/false. Lo salvo nella tabella generale affiancato al GUID dell&#39;oggetto.</span>
<a name="l00548"></a>00548                 <span class="comment">//Per fare questo creo l&#39;ultima array del ciclo in cui in prima posizione metto il GUID</span>
<a name="l00549"></a>00549                 $final_array = array();
<a name="l00550"></a>00550                 $final_array[0] = $value-&gt;getGUID();
<a name="l00551"></a>00551                         
<a name="l00552"></a>00552                 <span class="keywordflow">for</span>($h=0;$h&lt;count($metabook);$h++)
<a name="l00553"></a>00553                 {
<a name="l00554"></a>00554                         $final_array[$h+1] = $metabook[$h];
<a name="l00555"></a>00555                 }
<a name="l00556"></a>00556                         
<a name="l00557"></a>00557                 $tabella_books_tag[$j] = $final_array;
<a name="l00558"></a>00558                 $j +=1;
<a name="l00559"></a>00559                         
<a name="l00560"></a>00560         }
<a name="l00561"></a>00561         <span class="keywordflow">return</span> $tabella_books_tag;
<a name="l00562"></a>00562 }
<a name="l00563"></a>00563 
<a name="l00564"></a><a class="code" href="recommender_8php.html#abb0942a9a41ce7e4d4ef9d126e3309b6">00564</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#abb0942a9a41ce7e4d4ef9d126e3309b6">get_file_for_clustering</a>(&amp;$riga_tag_file)
<a name="l00565"></a>00565 {
<a name="l00566"></a>00566         $files = elgg_get_entities(array(<span class="stringliteral">&#39;type&#39;</span>=&gt;<span class="stringliteral">&#39;object&#39;</span>,<span class="stringliteral">&#39;subtype&#39;</span>=&gt;<span class="stringliteral">&#39;file&#39;</span>,<span class="stringliteral">&#39;limit&#39;</span>=&gt;0));
<a name="l00567"></a>00567         <span class="comment">//Inizializzo l&#39;array che conterrà tutti i tag riferiti ai file</span>
<a name="l00568"></a>00568         $i = 0;
<a name="l00569"></a>00569         <span class="keywordflow">foreach</span>($files as $value)
<a name="l00570"></a>00570         {
<a name="l00571"></a>00571                 $metadati = elgg_get_metadata(array(
<a name="l00572"></a>00572                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00573"></a>00573                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00574"></a>00574                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00575"></a>00575                 ));
<a name="l00576"></a>00576 
<a name="l00577"></a>00577                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00578"></a>00578                 {
<a name="l00579"></a>00579                         $riga_tag_file[$i] = $meta-&gt;value;
<a name="l00580"></a>00580                         $i +=1;
<a name="l00581"></a>00581                 }
<a name="l00582"></a>00582         }
<a name="l00583"></a>00583         <span class="comment">//Una  volta ottenuti tutti i nomi posso creare la tabella che conterrà le relazioni file-tag</span>
<a name="l00584"></a>00584         <span class="comment">//tramite un array associativo.</span>
<a name="l00585"></a>00585         $tabella_files_tag = array();
<a name="l00586"></a>00586         $j = 0;
<a name="l00587"></a>00587 
<a name="l00588"></a>00588         <span class="keywordflow">foreach</span>($files as $value)
<a name="l00589"></a>00589         {
<a name="l00590"></a>00590                 <span class="comment">//Array che conterrà i valori true/false riferiti ai metadati dei file</span>
<a name="l00591"></a>00591                 <span class="comment">//identificato dal GUID</span>
<a name="l00592"></a>00592                 $metafile = array();
<a name="l00593"></a>00593                 <span class="comment">//setto l&#39;array completamente a false</span>
<a name="l00594"></a>00594                 $i = 0;
<a name="l00595"></a>00595 
<a name="l00596"></a>00596                 <span class="keywordflow">foreach</span>($riga_tag_file as $meta_value)
<a name="l00597"></a>00597                 {
<a name="l00598"></a>00598                         $metafile[$i] = <span class="stringliteral">&#39;false&#39;</span>;
<a name="l00599"></a>00599                         $i +=1;
<a name="l00600"></a>00600                 }
<a name="l00601"></a>00601 
<a name="l00602"></a>00602                 $i = 0;
<a name="l00603"></a>00603                 <span class="comment">//Recupero i metadati</span>
<a name="l00604"></a>00604                 $metadati = elgg_get_metadata(array(
<a name="l00605"></a>00605                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00606"></a>00606                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00607"></a>00607                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00608"></a>00608                 ));
<a name="l00609"></a>00609                         
<a name="l00610"></a>00610                 <span class="comment">//Ogni tag che ho considerato lo confronto con un metadato riferito</span>
<a name="l00611"></a>00611                 <span class="comment">//all&#39;entità identificata dal GUID.</span>
<a name="l00612"></a>00612                 <span class="comment">//Se trovo corrispondenza positiva setto la posizione a TRUE.</span>
<a name="l00613"></a>00613                 <span class="comment">//Il conto delle posizione è affidato alla variabile i.</span>
<a name="l00614"></a>00614                 <span class="comment">//echo &quot;&lt;p&gt;ID &quot;. $value-&gt;getGUID() .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00615"></a>00615                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metadati &quot; . count($metadati) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00616"></a>00616                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metagroup &quot; . count($metafile) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00617"></a>00617                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00618"></a>00618                 {
<a name="l00619"></a>00619                         <span class="comment">//echo &quot;&lt;p&gt;Metadato considerato &quot;. $meta-&gt;value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00620"></a>00620                         $i = 0;
<a name="l00621"></a>00621                         <span class="keywordflow">foreach</span>($riga_tag_file as $riga_value)
<a name="l00622"></a>00622                         {
<a name="l00623"></a>00623                                 <span class="comment">//echo &quot;&lt;p&gt;Confronto &quot;. $meta-&gt;value .&quot; con &quot;. $riga_value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00624"></a>00624                                 <span class="keywordflow">if</span>($meta-&gt;value == $riga_value)
<a name="l00625"></a>00625                                 {
<a name="l00626"></a>00626                                         $metafile[$i] = <span class="stringliteral">&#39;true&#39;</span>;
<a name="l00627"></a>00627                                 }
<a name="l00628"></a>00628                                 $i +=1;
<a name="l00629"></a>00629                         }
<a name="l00630"></a>00630                 }
<a name="l00631"></a>00631                         
<a name="l00632"></a>00632                 <span class="comment">//Ora meta_file è un array di true/false. Lo salvo nella tabella generale affiancato al GUID dell&#39;oggetto.</span>
<a name="l00633"></a>00633                 <span class="comment">//Per fare questo creo l&#39;ultima array del ciclo in cui in prima posizione metto il GUID</span>
<a name="l00634"></a>00634                 $final_array = array();
<a name="l00635"></a>00635                 $final_array[0] = $value-&gt;getGUID();
<a name="l00636"></a>00636                         
<a name="l00637"></a>00637                 <span class="keywordflow">for</span>($h=0;$h&lt;count($metafile);$h++)
<a name="l00638"></a>00638                 {
<a name="l00639"></a>00639                         $final_array[$h+1] = $metafile[$h];
<a name="l00640"></a>00640                 }
<a name="l00641"></a>00641                         
<a name="l00642"></a>00642                 $tabella_files_tag[$j] = $final_array;
<a name="l00643"></a>00643                 $j +=1;
<a name="l00644"></a>00644         }
<a name="l00645"></a>00645         <span class="keywordflow">return</span> $tabella_files_tag;
<a name="l00646"></a>00646 }
<a name="l00647"></a>00647 
<a name="l00648"></a><a class="code" href="recommender_8php.html#aebf23d4d854642c625f9332952999f74">00648</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#aebf23d4d854642c625f9332952999f74">get_users_for_clustering</a>(&amp;$riga_tag_user)
<a name="l00649"></a>00649 {
<a name="l00650"></a>00650         $users = elgg_get_entities(array(<span class="stringliteral">&#39;type&#39;</span>=&gt;<span class="stringliteral">&#39;user&#39;</span>,<span class="stringliteral">&#39;limit&#39;</span>=&gt;0));
<a name="l00651"></a>00651         
<a name="l00652"></a>00652         <span class="comment">//Inizializzo l&#39;array che conterrà tutti i tag riferiti agli utenti</span>
<a name="l00653"></a>00653         $i = 0;
<a name="l00654"></a>00654         <span class="keywordflow">foreach</span>($users as $value)
<a name="l00655"></a>00655         {
<a name="l00656"></a>00656                 $metadati = elgg_get_metadata(array(
<a name="l00657"></a>00657                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00658"></a>00658                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;interests&#39;</span>,
<a name="l00659"></a>00659                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00660"></a>00660                 ));
<a name="l00661"></a>00661 
<a name="l00662"></a>00662                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00663"></a>00663                 {
<a name="l00664"></a>00664                         $riga_tag_user[$i] = $meta-&gt;value;
<a name="l00665"></a>00665                         $i +=1;
<a name="l00666"></a>00666                 }
<a name="l00667"></a>00667         }
<a name="l00668"></a>00668 
<a name="l00669"></a>00669         <span class="comment">//Una  volta ottenuti tutti i nomi posso creare la tabella che conterrà le relazioni user-tag</span>
<a name="l00670"></a>00670         <span class="comment">//tramite un array associativo.</span>
<a name="l00671"></a>00671         $tabella_users_tag = array();
<a name="l00672"></a>00672         $j = 0;
<a name="l00673"></a>00673 
<a name="l00674"></a>00674         <span class="keywordflow">foreach</span>($users as $value)
<a name="l00675"></a>00675         {
<a name="l00676"></a>00676                 <span class="comment">//Array che conterrà i valori true/false riferiti ai metadati degli utenti</span>
<a name="l00677"></a>00677                 <span class="comment">//identificato dal GUID</span>
<a name="l00678"></a>00678                 $metauser = array();
<a name="l00679"></a>00679 
<a name="l00680"></a>00680                 <span class="comment">//setto l&#39;array completamente a false</span>
<a name="l00681"></a>00681                 $i = 0;
<a name="l00682"></a>00682                 <span class="keywordflow">foreach</span>($riga_tag_user as $meta_value)
<a name="l00683"></a>00683                 {
<a name="l00684"></a>00684                         $metauser[$i] = <span class="stringliteral">&#39;false&#39;</span>;
<a name="l00685"></a>00685                         $i +=1;
<a name="l00686"></a>00686                 }
<a name="l00687"></a>00687 
<a name="l00688"></a>00688                 $i = 0;
<a name="l00689"></a>00689                 <span class="comment">//Recupero i metadati</span>
<a name="l00690"></a>00690                 $metadati = elgg_get_metadata(array(
<a name="l00691"></a>00691                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00692"></a>00692                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;interests&#39;</span>,
<a name="l00693"></a>00693                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00694"></a>00694                 ));
<a name="l00695"></a>00695                         
<a name="l00696"></a>00696                 <span class="comment">//Ogni tag che ho considerato lo confronto con un metadato riferito</span>
<a name="l00697"></a>00697                 <span class="comment">//all&#39;entità identificata dal GUID.</span>
<a name="l00698"></a>00698                 <span class="comment">//Se trovo corrispondenza positiva setto la posizione a TRUE.</span>
<a name="l00699"></a>00699                 <span class="comment">//Il conto delle posizione è affidato alla variabile i.</span>
<a name="l00700"></a>00700                 <span class="comment">//echo &quot;&lt;p&gt;ID &quot;. $value-&gt;getGUID() .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00701"></a>00701                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metadati &quot; . count($metadati) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00702"></a>00702                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metagroup &quot; . count($metauser) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00703"></a>00703                         
<a name="l00704"></a>00704                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00705"></a>00705                 {
<a name="l00706"></a>00706                         <span class="comment">//echo &quot;&lt;p&gt;Metadato considerato &quot;. $meta-&gt;value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00707"></a>00707                         $i = 0;
<a name="l00708"></a>00708                         <span class="keywordflow">foreach</span>($riga_tag_user as $riga_value)
<a name="l00709"></a>00709                         {
<a name="l00710"></a>00710                                 <span class="comment">//echo &quot;&lt;p&gt;Confronto &quot;. $meta-&gt;value .&quot; con &quot;. $riga_value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00711"></a>00711                                         
<a name="l00712"></a>00712                                 <span class="keywordflow">if</span>($meta-&gt;value == $riga_value)
<a name="l00713"></a>00713                                 {
<a name="l00714"></a>00714                                         $metauser[$i] = <span class="stringliteral">&#39;true&#39;</span>;
<a name="l00715"></a>00715 
<a name="l00716"></a>00716                                 }
<a name="l00717"></a>00717                                 $i +=1;
<a name="l00718"></a>00718                         }
<a name="l00719"></a>00719                 }
<a name="l00720"></a>00720 
<a name="l00721"></a>00721                 <span class="comment">//Ora metauser è un array di true/false. Lo salvo nella tabella generale affiancato al GUID dell&#39;oggetto.</span>
<a name="l00722"></a>00722                 <span class="comment">//Per fare questo creo l&#39;ultima array del ciclo in cui in prima posizione metto il GUID</span>
<a name="l00723"></a>00723                 $final_array = array();
<a name="l00724"></a>00724                 $final_array[0] = $value-&gt;getGUID();
<a name="l00725"></a>00725                         
<a name="l00726"></a>00726                 <span class="keywordflow">for</span>($h=0;$h&lt;count($metauser);$h++)
<a name="l00727"></a>00727                 {
<a name="l00728"></a>00728                         $final_array[$h+1] = $metauser[$h];
<a name="l00729"></a>00729                 }
<a name="l00730"></a>00730                         
<a name="l00731"></a>00731                 $tabella_users_tag[$j] = $final_array;
<a name="l00732"></a>00732                 $j +=1;
<a name="l00733"></a>00733                         
<a name="l00734"></a>00734         }
<a name="l00735"></a>00735         <span class="keywordflow">return</span> $tabella_users_tag;
<a name="l00736"></a>00736                 
<a name="l00737"></a>00737 }
<a name="l00738"></a>00738 
<a name="l00739"></a>00739 
<a name="l00740"></a><a class="code" href="recommender_8php.html#a545ab3ed80b3fd0271c6b57d79d754d9">00740</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#a545ab3ed80b3fd0271c6b57d79d754d9">get_group_for_clustering</a>(&amp;$riga_tag_group)
<a name="l00741"></a>00741 {
<a name="l00742"></a>00742         $groups = elgg_get_entities(array(<span class="stringliteral">&#39;type&#39;</span>=&gt;<span class="stringliteral">&#39;group&#39;</span>,<span class="stringliteral">&#39;limit&#39;</span>=&gt;0));
<a name="l00743"></a>00743         <span class="comment">//Inizializzo l&#39;array che conterrà tutti i tag riferiti ai gruppi</span>
<a name="l00744"></a>00744         $i = 0;
<a name="l00745"></a>00745         <span class="keywordflow">foreach</span>($groups as $value)
<a name="l00746"></a>00746         {
<a name="l00747"></a>00747                 $metadati = elgg_get_metadata(array(
<a name="l00748"></a>00748                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00749"></a>00749                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;interests&#39;</span>,
<a name="l00750"></a>00750                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00751"></a>00751                 ));
<a name="l00752"></a>00752 
<a name="l00753"></a>00753                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00754"></a>00754                 {
<a name="l00755"></a>00755                         $riga_tag_group[$i] = $meta-&gt;value;
<a name="l00756"></a>00756                         $i +=1;
<a name="l00757"></a>00757                 }
<a name="l00758"></a>00758         }
<a name="l00759"></a>00759 
<a name="l00760"></a>00760         <span class="comment">//Una  volta ottenuti tutti i nomi posso creare la tabella che conterrà le relazioni gruppo-tag</span>
<a name="l00761"></a>00761         <span class="comment">//tramite un array associativo.</span>
<a name="l00762"></a>00762         $tabella_groups_tag = array();
<a name="l00763"></a>00763         $j = 0;
<a name="l00764"></a>00764 
<a name="l00765"></a>00765         <span class="keywordflow">foreach</span>($groups as $value)
<a name="l00766"></a>00766         {
<a name="l00767"></a>00767                 <span class="comment">//Array che conterrà i valori true/false riferiti ai metadati dei gruppi</span>
<a name="l00768"></a>00768                 <span class="comment">//identificato dal GUID</span>
<a name="l00769"></a>00769                 $metagroup = array();
<a name="l00770"></a>00770 
<a name="l00771"></a>00771                 <span class="comment">//setto l&#39;array completamente a false</span>
<a name="l00772"></a>00772                 $i = 0;
<a name="l00773"></a>00773                 <span class="keywordflow">foreach</span>($riga_tag_group as $meta_value)
<a name="l00774"></a>00774                 {
<a name="l00775"></a>00775                         $metagroup[$i] = <span class="stringliteral">&#39;false&#39;</span>;
<a name="l00776"></a>00776                         $i +=1;
<a name="l00777"></a>00777                 }
<a name="l00778"></a>00778 
<a name="l00779"></a>00779                 $i = 0;
<a name="l00780"></a>00780                 <span class="comment">//Recupero i metadati</span>
<a name="l00781"></a>00781                 $metadati = elgg_get_metadata(array(
<a name="l00782"></a>00782                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00783"></a>00783                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;interests&#39;</span>,
<a name="l00784"></a>00784                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00785"></a>00785                 ));
<a name="l00786"></a>00786                         
<a name="l00787"></a>00787                 <span class="comment">//Ogni tag che ho considerato lo confronto con un metadato riferito</span>
<a name="l00788"></a>00788                 <span class="comment">//all&#39;entità identificata dal GUID.</span>
<a name="l00789"></a>00789                 <span class="comment">//Se trovo corrispondenza positiva setto la posizione a TRUE.</span>
<a name="l00790"></a>00790                 <span class="comment">//Il conto delle posizione è affidato alla variabile i.</span>
<a name="l00791"></a>00791                 <span class="comment">//echo &quot;&lt;p&gt;ID &quot;. $value-&gt;getGUID() .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00792"></a>00792                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metadati &quot; . count($metadati) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00793"></a>00793                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metagroup &quot; . count($metagroup) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00794"></a>00794                         
<a name="l00795"></a>00795                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00796"></a>00796                 {
<a name="l00797"></a>00797                         <span class="comment">//echo &quot;&lt;p&gt;Metadato considerato &quot;. $meta-&gt;value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00798"></a>00798                         $i = 0;
<a name="l00799"></a>00799                         <span class="keywordflow">foreach</span>($riga_tag_group as $riga_value)
<a name="l00800"></a>00800                         {
<a name="l00801"></a>00801                                 <span class="comment">//echo &quot;&lt;p&gt;Confronto &quot;. $meta-&gt;value .&quot; con &quot;. $riga_value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00802"></a>00802                                         
<a name="l00803"></a>00803                                 <span class="keywordflow">if</span>($meta-&gt;value == $riga_value)
<a name="l00804"></a>00804                                 {
<a name="l00805"></a>00805                                         $metagroup[$i] = <span class="stringliteral">&#39;true&#39;</span>;
<a name="l00806"></a>00806 
<a name="l00807"></a>00807                                 }
<a name="l00808"></a>00808                                 $i +=1;
<a name="l00809"></a>00809                         }
<a name="l00810"></a>00810                 }
<a name="l00811"></a>00811 
<a name="l00812"></a>00812                 <span class="comment">//Ora meta_group è un array di true/false. Lo salvo nella tabella generale affiancato al GUID dell&#39;oggetto.</span>
<a name="l00813"></a>00813                 <span class="comment">//Per fare questo creo l&#39;ultima array del ciclo in cui in prima posizione metto il GUID</span>
<a name="l00814"></a>00814                 $final_array = array();
<a name="l00815"></a>00815                 $final_array[0] = $value-&gt;getGUID();
<a name="l00816"></a>00816                         
<a name="l00817"></a>00817                 <span class="keywordflow">for</span>($h=0;$h&lt;count($metagroup);$h++)
<a name="l00818"></a>00818                 {
<a name="l00819"></a>00819                         $final_array[$h+1] = $metagroup[$h];
<a name="l00820"></a>00820                 }
<a name="l00821"></a>00821                         
<a name="l00822"></a>00822                 $tabella_groups_tag[$j] = $final_array;
<a name="l00823"></a>00823                 $j +=1;
<a name="l00824"></a>00824                         
<a name="l00825"></a>00825         }
<a name="l00826"></a>00826         <span class="keywordflow">return</span> $tabella_groups_tag;
<a name="l00827"></a>00827 }
<a name="l00828"></a>00828 
<a name="l00829"></a><a class="code" href="recommender_8php.html#abd5fa1133b5b993491f04586f91ae3dd">00829</a> <span class="keyword">function</span> <a class="code" href="recommender_8php.html#abd5fa1133b5b993491f04586f91ae3dd">get_blog_for_clustering</a>(&amp;$riga_tag)
<a name="l00830"></a>00830 {
<a name="l00831"></a>00831         $blogs = elgg_get_entities(array(<span class="stringliteral">&#39;type&#39;</span>=&gt;<span class="stringliteral">&#39;object&#39;</span>,<span class="stringliteral">&#39;subtype&#39;</span>=&gt;<span class="stringliteral">&#39;blog&#39;</span>,<span class="stringliteral">&#39;limit&#39;</span>=&gt;0));
<a name="l00832"></a>00832          
<a name="l00833"></a>00833         <span class="comment">//Inizializzo l&#39;array che conterrà tutti i tag riferiti ai blog</span>
<a name="l00834"></a>00834         $i = 0;
<a name="l00835"></a>00835         <span class="keywordflow">foreach</span>($blogs as $value)
<a name="l00836"></a>00836         {
<a name="l00837"></a>00837                 $metadati = elgg_get_metadata(array(
<a name="l00838"></a>00838                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00839"></a>00839                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00840"></a>00840                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00841"></a>00841                 ));
<a name="l00842"></a>00842                  
<a name="l00843"></a>00843                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00844"></a>00844                 {
<a name="l00845"></a>00845                         $riga_tag[$i] = $meta-&gt;value;
<a name="l00846"></a>00846                         $i +=1;
<a name="l00847"></a>00847                 }
<a name="l00848"></a>00848         }
<a name="l00849"></a>00849 
<a name="l00850"></a>00850         <span class="comment">//Una  volta ottenuti tutti i nomi posso creare la tabella che conterrà le relazioni blog-tag</span>
<a name="l00851"></a>00851         <span class="comment">//tramite un array associativo.</span>
<a name="l00852"></a>00852          
<a name="l00853"></a>00853         $tabella_blogs_tag = array();
<a name="l00854"></a>00854         $j = 0;
<a name="l00855"></a>00855 
<a name="l00856"></a>00856         <span class="keywordflow">foreach</span>($blogs as $value)
<a name="l00857"></a>00857         {
<a name="l00858"></a>00858                 <span class="comment">//Array che conterrà i valori true/false riferiti ai metadati del blog</span>
<a name="l00859"></a>00859                 <span class="comment">//identificato dal GUID</span>
<a name="l00860"></a>00860                 $metablog = array();
<a name="l00861"></a>00861 
<a name="l00862"></a>00862                 <span class="comment">//setto l&#39;array completamente a false</span>
<a name="l00863"></a>00863                 $i = 0;
<a name="l00864"></a>00864                 <span class="keywordflow">foreach</span>($riga_tag as $meta_value)
<a name="l00865"></a>00865                 {
<a name="l00866"></a>00866                         $metablog[$i] = <span class="stringliteral">&#39;false&#39;</span>;
<a name="l00867"></a>00867                         $i +=1;
<a name="l00868"></a>00868                 }
<a name="l00869"></a>00869 
<a name="l00870"></a>00870                 $i = 0;
<a name="l00871"></a>00871                 <span class="comment">//Recupero i metadati</span>
<a name="l00872"></a>00872                 $metadati = elgg_get_metadata(array(
<a name="l00873"></a>00873                                  <span class="stringliteral">&#39;guid&#39;</span> =&gt; $value-&gt;getGUID(),
<a name="l00874"></a>00874                                  <span class="stringliteral">&#39;metadata_name&#39;</span> =&gt; <span class="stringliteral">&#39;tags&#39;</span>,
<a name="l00875"></a>00875                                  <span class="stringliteral">&#39;limit&#39;</span> =&gt; 0,
<a name="l00876"></a>00876                 ));
<a name="l00877"></a>00877                 <span class="comment">//Ogni tag che ho considerato lo confronto con un metadato riferito</span>
<a name="l00878"></a>00878                 <span class="comment">//all&#39;entità identificata dal GUID.</span>
<a name="l00879"></a>00879                 <span class="comment">//Se trovo corrispondenza positiva setto la posizione a TRUE.</span>
<a name="l00880"></a>00880                 <span class="comment">//Il conto delle posizione è affidato alla variabile i.</span>
<a name="l00881"></a>00881                 <span class="comment">//echo &quot;&lt;p&gt;ID &quot;. $value-&gt;getGUID() .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00882"></a>00882                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metadati &quot; . count($metadati) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00883"></a>00883                 <span class="comment">//echo &quot;&lt;p&gt;Contatore metablog &quot; . count($metablog) . &quot;&lt;/p&gt;&quot;;</span>
<a name="l00884"></a>00884                         
<a name="l00885"></a>00885                 <span class="keywordflow">foreach</span>($metadati as $meta)
<a name="l00886"></a>00886                 {
<a name="l00887"></a>00887                         <span class="comment">//echo &quot;&lt;p&gt;Metadato considerato &quot;. $meta-&gt;value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00888"></a>00888                         $i = 0;
<a name="l00889"></a>00889                         <span class="keywordflow">foreach</span>($riga_tag as $riga_value)
<a name="l00890"></a>00890                         {
<a name="l00891"></a>00891                                 <span class="comment">//echo &quot;&lt;p&gt;Confronto &quot;. $meta-&gt;value .&quot; con &quot;. $riga_value .&quot;&lt;/p&gt;&quot;;</span>
<a name="l00892"></a>00892                                 <span class="keywordflow">if</span>($meta-&gt;value == $riga_value)
<a name="l00893"></a>00893                                 {
<a name="l00894"></a>00894                                         $metablog[$i] = <span class="stringliteral">&#39;true&#39;</span>;
<a name="l00895"></a>00895                                 }
<a name="l00896"></a>00896                                 $i +=1;
<a name="l00897"></a>00897                         }
<a name="l00898"></a>00898                 }
<a name="l00899"></a>00899                         
<a name="l00900"></a>00900                 <span class="comment">//Ora meta_blog è un array di true/false. Lo salvo nella tabella generale affiancato al GUID dell&#39;oggetto.</span>
<a name="l00901"></a>00901                 <span class="comment">//Per fare questo creo l&#39;ultima array del ciclo in cui in prima posizione metto il GUID</span>
<a name="l00902"></a>00902                 $final_array = array();
<a name="l00903"></a>00903                 $final_array[0] = $value-&gt;getGUID();
<a name="l00904"></a>00904                         
<a name="l00905"></a>00905                 <span class="keywordflow">for</span>($h=0;$h&lt;count($metablog);$h++)
<a name="l00906"></a>00906                 {
<a name="l00907"></a>00907                         $final_array[$h+1] = $metablog[$h];
<a name="l00908"></a>00908                 }
<a name="l00909"></a>00909                         
<a name="l00910"></a>00910                 $tabella_blogs_tag[$j] = $final_array;
<a name="l00911"></a>00911                 $j +=1;
<a name="l00912"></a>00912         }
<a name="l00913"></a>00913         <span class="keywordflow">return</span> $tabella_blogs_tag;
<a name="l00914"></a>00914 }
<a name="l00915"></a>00915 ?&gt;
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